patterson



(No Model.)

W. R. PATTERSON.

ELEGTRIG GONDUGTOR.

Patented Oct. 14, 1884.

nullv 11 UNITED STATES PATENTQFHCEO \VILLIAM R. PATTERSON, OF CHICAGO,ILLINOIS, ASSIGNOR TO THE VEST- ERN ELECTRIC COMPANY, OF SAME PLACE.

ELECTRIC CONDUCTOR.

SPECIFICATION forming part of Letters Patent No. 306,513, dated October14, 1884.

Application filed June Tr) all 'whom, it may concern:

Be it known that I, IVILLIAM R. PATTER- SON, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois,'have inventeda certain new and useful Improvement inInsulating Electric Conductors, (Case 37,) of which the following is afull, clear, concise, and exact description, reference being had to theaccompanying drawings, forming a part of this specification.

My invention relates to insulating electric conductors, and isespecially useful as applied to electrie-light wires, which should-befiexible and insulated by a covering which will not I 5 take fire.

My invention consists in covering the wire or core of conductors with afibrous material, about which is wound one or more layers of lead tapelapped so as to break joints, and

2 then covering the lead with a serving of jute or cotton which issaturated with a fire-proof paint. 'I apply shellac or paint to thejoints of the lead tape, so as to render the covering of leadwater-proof. I preferably wind a cloth tape about the fireproof serving.

In Figure 1 of the drawings I have shown the manner of applying myinvention to a core of conductors. In Fig. 2 I have shown a sin gle wireprovided with my fire-proof insulat- 0 ing-covering. Fig. 3 is aperspective view showing a. double covering of lead tape in detail.

The core a of insulated wires may be bunched together in any well-knownway, and may con- 5 sist of any number of conductors. A single wire, a,may be used, if desired, as shown in Fig. 2.

The covering which I have invented con sists of the combination of thefibrous covering 1) next to the core or conductor, the cover 1 ingoflead tape c,wound aboutthe said fibrous covering so as to lap or breakjoints, the joints or laps being preferably shellacked or painted. Aboutthe lead tape I provide a serving, (1, of cotton or jute, which may be 5wound or braided thereon, preferably in two thicknesses, the first beingwound and the second braided. The serving thus formed is saturated withsome fire-proof paint.

As shown in Fig. 3, I have provided a dou- 5o ble winding oflead tape,in order that moisture may not penetrate.

My cable as thus constructed is very flexible, and at the same timethoroughly insulated and fire-proof.

Cables thus formed are not designed for un derground or subterraneanuses, but for aerial uses, and for running circuits through build in gsfor elect-ricdight purposes they are cheaper and better than any of thecables with which I am familiar, since they are light and flexible, andat the same time proof against moisture and not liable to ignite andcause fires.

I claim-- 1. The combination. with a flexible core or conducting-wire,of a fibrous covering, a leadtape covering, and the fire-proof serving,substantially as and for the purpose specified.

2. The telegraphcable which consists of a central core of one or moreconductors, and 0 the covering of fibrous material, I), the lapped leadtape, the joints being protected by shellac or paint, and the fireproofserving,coinbined substantially asand for the purpose specified.

I11 witness whereof I hereunto subscribe my name this 20th day of June,A. l). 1884..

\VILLIAM It. .IiVI IER-SON.

Witnesses:

GEORGE I Ban'ron, ERNEST I. WARNER.

